CEI EN 61325 : 1998

SECTION 1 GENERAL
1 SCOPE
2 NORMATIVE REFERENCES
3 DEFINITIONS
SECTION 2 INSULATORS
4 INSULATOR CLASSES AND TYPE
5 INSULATING MATERIALS
6 SPECIFIED CHARACTERISTICS AND FEATURES
   OF A D.C. INSULATOR UNIT
7 IDENTIFICATION OF INSULATORS
SECTION 3 - CLASSIFICATION OF TESTS,
            SAMPLING RULES AND
            PROCEDURES
8 CLASSIFICATION OF TESTS
9 QUALITY ASSURANCE
10 PROCEDURES FOR TYPE AND SAMPLE TESTS
SECTION 4 - TEST PROCEDURES FOR ELECTRICAL
            TESTS
11 GENERAL REQUIREMENTS FOR HIGH-VOLTAGE TESTS
12 STANDARD ATMOSPHERIC CONDITIONS AND
   CORRECTION FACTORS FOR ELECTRICAL TESTS
13 MOUNTING ARRANGEMENTS FOR ELECTRICAL TESTS
14 LIGHTNING IMPULSE VOLTAGE TESTS
15 DRY D.C. VOLTAGE TESTS
16 SF[6] PUNCTURE WITHSTAND TEST
17 IMPULSE OVERVOLTAGE PUNCTURE WITHSTAND TEST
18 ION MIGRATION TEST
19 ELECTRICAL BODY RESISTANCE TEST
20 THERMAL RUNAWAY TEST
21 ROUTINE ELECTRICAL TEST
SECTION 5 - TEST PROCEDURES FOR MECHANICAL
            AND OTHER TESTS
22 VERIFICATION OF THE DIMENSIONS
23 ELECTROMECHANICAL FALLING LOAD TEST
24 MECHANICAL FALLING LOAD TEST
25 THERMAL-MECHANICAL PERFORMANCE TEST
26 RESIDUAL MECHANICAL STRENGTH TEST
27 VERIFICATION OF THE AXIAL, RADIAL
   AND ANGULAR DISPLACEMENTS
28 VERIFICATION OF THE LOCKING SYSTEM
29 TEMPERATURE CYCLE TEST
   THERMAL SHOCK TEST
30 THERMAL SHOCK TEST
31 POROSITY TEST
32 GALVANIZING TEST
33 ROUTINE VISUAL INSPECTION
34 ROUTINE MECHANICAL TEST
35 ZINC SLEEVE TEST
36 ZINC COLLAR TEST
SECTION 6 - TESTS ON STRING INSULATOR UNITS
37 GENERAL
ANNEX A (informative) - METHOD OF COMPARISON
                        OF THE RESULTS OF THE
                        ELECTROMECHANICAL OR MECHANICAL
                        FAILING LOAD TYPE AND SAMPLE TESTS
ANNEX B (informative) - BIBLIOGRAPHY
Annex ZA (normative) - Normative references
                       to international publications with
                       their corresponding European
                       publications

Describes string insulator units of ceramic material or glass for use on d.c. overhead power lines with a nominal voltage greater than 1000 V.